NDLI: The incomplete plasma dispersion function: Properties and application to waves and collisions near plasma boundaries

Content Provider	IEEE Xplore Digital Library
Author	Baalrud, S.D.
Copyright Year	2013
Description	Author affiliation: Los Alamos Nat. Lab., Los Alamos, NM, USA (Baalrud, S.D.)
Abstract	Summary form only given. The incomplete plasma dispersion function1, 2 is a generalization of the plasma dispersion function in which the defining integral spans a semi-infinite, rather than infinite, domain. Like the plasma dispersion function, it arises in the linear dielectric function and corresponding wave dispersion relations. However, the plasma dispersion function describes Maxwellian distributions, whereas the incomplete plasma dispersion function describes non-Maxwellian distributions so long as they can be approximated as Maxwellian in finite, or semi-infinite, intervals of velocity phase-space. Each interval may have different characteristic densities, flow speeds, and temperatures associated with them. It is particularly useful in the presence of potential barriers, such as sheaths near material walls, probes, or double layers, which create a trapped-passing boundary for electrons. In this poster, several properties of the incomplete plasma dispersion function that are useful for applying it to the linear dielectric response and wave dispersion relations in piecewise Maxwellian plasmas are provided. The depleted Maxwellian, as found near a conventional sheath, is used as an example to demonstrate the utility of using this function to compute modifications to common wave dispersion relations (ion-acoustic and Langmuir waves). It is also used to show that modifications to the dielectric function in the depleted region of velocity-space can significantly affect the local (in velocity-space) Coulomb collision rate. Here, we compare predictions of the Landau collision operator, which does not account for the plasma dielectric response, with predictions of the Lenard-Balescu equation, which does. Near equilibrium, these solutions converge.
Starting Page	1
Ending Page	1
File Size	550879
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6633370
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dispersion Dielectrics Plasma properties Laboratories Physics Astronomy
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Condensed Matter Physics Atomic and Molecular Physics, and Optics

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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